Your statement attempts to show evidence that a society with no wealth diversity is unstable. That has no bearing on the original hypothesis that high diversity is unstable. Still it fails in this attempt because the historical instability in Communism has always been due to high wealth diversity that arises from political corruption, which ironically supports the original hypothesis.
ynniv - you got him all wrong. He said "Extremes in wealth are not compatible with a stable free society." Could he be any clearer? Everything you said agrees with that.
So... try again?